---Is that your book?-Yes .A. it isB. it isn’tC. it’sD. this is

问题补充：

---Is that your book?

---Yes, .

A. it is

B. it isn’t

C. it’s

D. this is

答案：

(答案→)A. it is

B. it isn’t

C. it’s

D. this is

解析：对于Is that ····？在回答时，要用yes，it is，或No，it isn’t，故选答案为A